Bump Microsoft.VisualStudio.Threading.Analyzers from 17.7.30 to 17.8.14 (#809)

Bumps [Microsoft.VisualStudio.Threading.Analyzers](https://github.com/microsoft/vs-threading) from 17.7.30 to 17.8.14.
- [Release notes](https://github.com/microsoft/vs-threading/releases)
- [Commits](https://github.com/microsoft/vs-threading/commits)

---
updated-dependencies:
- dependency-name: Microsoft.VisualStudio.Threading.Analyzers
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Directory.Build.props

@@ -47,7 +47,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Microsoft.VisualStudio.Threading.Analyzers" Version="17.7.30">
+    <PackageReference Include="Microsoft.VisualStudio.Threading.Analyzers" Version="17.8.14">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>